Rotary engine



Marh 13, 1945. y R, H. GOLD ETAL l ROTARY ENGINE Filed May 24, 1941 3 Sheets-Sheet l BWM,

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ROTARY ENGINE Filed May 24,-1941 3 Sheets-Sheet 2 L Six March 13, R H GOLD E -l-AL ROTARY EANGINE Filed May 24, 1941 3 Sheets-Sheet 3 n a modified Patented Mar.. 13, 1,945

cago, Ill..

Chaplick. Chicago, Ill.

Application May 24, 1941. Serial No. 394,970

(Cl. 12S-14) 3 Claims.

The invention relates to rotary internal combustion engines.

It is an object of the invention to provide a rotary engine wherein the gas is fully expanded iin the engine and exhausted at atmospheric pressure.

further object embraces the provision of a compression chamber Whose cubic content may be altered to provide variable compression.

A still further object constitutes the provision of a rotary engine obviating the employment ofl awater pump or oil pump or a fan and requirimY practically no cooling.'

It is a furtherob'jeCt to provide a rotary engine which is of extremely simple construction, having very few parts and yet is highly ecient.

It is another object to provide a rotary engine capable of being operated in the manner of a assignors of one-third to -Jacob Yand I2 separated by spacer sleeves I3, through which extends a bolt I4 for holding the walls together. f f

The side walls are each formed with an integral hub I5 provided with a bearing sleeve I6 in which is journaled a shaft I'l surrounded by a rotor I8 secured to the shaft by a spline I9.

The rotor is of smaller diameter than the cylinder and is provided with a single piston 20. IA

carbureter 2l is connected to a pipe 22 adapted to discharge gasiied fuel into the cylinder through a port 23. Another port 24 permits exhaust through a pipe 25.

compression-ignition engine where fuel under normal pressure is injected into the combustion chamber.

It is also an object of the invention to provide certain features of construction and arrangement of parts tending to enhance the utility and eiciency of a rotary engine.

With these and many other objects in View, which will become apparent from a perusal of the invention', the latter comprises the means de-l scribed in the following specification, particularly pointed out in the claims forming a part thereof. and illustrated in .the accompanying drawings, in

' which:

Fig. l is a longitudinal section through a ro- A sliding'. abutment 26 is mounted for lateral reciprocation between the pipesv 22 and V25, through the cylinder in guides 21 and 28.

A small casing 29 is secured to the cylinder by bolts 30 adjacent to the discharge end ofthe carbureter. ThecasingI encloses a chamber 3| in which a check valve 32 controls a 'port 33 and protrudes with the stem 34 which enters an agierture in a bracket 35. A spring 36 is interposed between the bracket and av collar 31 secured to the Valve stem. 'n

A sliding abutment 38 is provided which extends from the rotor through the cylinder Aadja cent to the check valve and enters guides 133 at tary engine constructed in accordance with our invention, v

Fig. 2 is a section on the line 2 2 of Fig. l. showing the parts in ring position, I

Fig. 3 is a detail section on the line 3-3 of Fig. 1J

Fig. 3a is a diagrammatic view showing the actuating means for the gate valves,

Fig. 4 is a partial longitudinal section through :rotary engine operable as a compresslon-ignition engine.Vv A Fig. 5 is a cross section through a further modication employing three pistons, and

Fig. 6 is a side view of the rotor and pistons.

Figs. 7. 8 are fragmentary sections similar to Fig. 1` showing parts in different positions.

Fig. 9 is a fragmentary section similarY to Fig. 2 with one of the abutment-s in normal position.

The invention embodies a rotary engine where in a rotor is provided with a. single piston.

Referring to the several views in the drawings. ID designates av cylinder comprising side walls I I the upper edge and :guides 40 at the lower edge..

The slidingabutment 38vis provided with an aperture 4I for a purpose hereinafter described. A spark plug 42 is mounted on the casing to ignite the compressed charge vin Athe explosion chamber 3|.

As indicated diagrammatically in Fig. `3a, a roller 43 is secured to the shaft Il. The roller is formedvwithtwo `cam lgrooves and 45. The sliding fabutment' 26 has a stem 26a which enters, with a bent end, the groove 45, whereas the stem 41 on the sliding abutment 38 enters the groove 44.

Theoperation of the engine is as follows:

The rotor' I8 rotates in counter-clockwise direction together with its piston 2I1, expelling the air as it approaches the gate valve 26 through the exhaust 25.

The rotation of the roller 43 causes the gate valve 26 to open to permit passing of the piston and closes the valve immediately behind the piston.

In the subsequent rotation, the-piston creates a vacuum behind it, causing a charge .to be drawn in from the carbureter and simultaneouslyA compresses a previouslyV drawn-in charge into theI chamber 3| through port 33 and check valvev 32;'

The sliding abutment 33 normally shuts` off` communication between the major portion of the chamber 3| and a port 4,5 through which the ignited gases are admitted to the cylinder, at which time the opening Il occupies the dash and dotted position shown in Fig. 2.- vThe sliding abutment 38 has three positions being:

.The sliding abutment 38 is withdrawn to clear the piston, is then returned to normal position, and thereupon is moved further to the left, as viewed in Fig. 2, to bring the gate valve opening Il in the position shown in Figs.. 1 and 2 so that the explosive charge passes through the openings 4| and 46 into the cylinder. Thereupon the sliding abutment 38 is returned to normal position.

The power stroke of the piston extends over approximately 90% of the entire revolution so that the explosive charge undergoes a maximum expansion. I'

The piston, while executing the power stroke,

simultaneously expels through the exhaust pipe the previously spent gases.

It is evident that the rotary engine has an unusually long power stroke and hence affords great efliciency.

There are no reciprocating parts with the exception of the sliding abutments, and practically no cooling is necessary, thus dispensing with an oil pump, water pump, and a fan.

The explosion chamber being located on the outside of the casing cooling occurs without additional means being provided therefor.

The construction of the engine is extremely simple, insuring continuity of operation without any breakdowns.

In the modification shown in Fig. 4, a rotary engine is shown Where fuel is injected under atmospheric pressure. Here the rotor il has a piston 68 secured thereto by screws lill. The cylinder 5B has an exhaust 5i and an air inlet 52. A casing 53 is secured to the cylinder and provides an explosion chamber Eli. A port 55 in the cylinder is controlled by a check valve 56.

A threaded stud 51 enters an aperture in the casing 53 and may be adjusted tol vary the content of the chamber 51% and thereby the compression obtained therein.

The casing 53 is formed with a tubular extension 58 to receive the end of a pipe 59 for supplying a charge of fuel under atmospheric pressure. The operation of the engine is the same as of the rst described embodiment except that only air empliileslthe employment of a rotorn having a peripheral piston lil4 anda piston 62 and 63 respectively secured to the rotor at the sides thereof.

Obviously, for each piston a separate set of gate valves, a separate explosion chamber, and other auxiliary parts are provided creating thereby an engine of triple power with a single rotor.

The numberof pistons may, of course, be increased or decreased.

While the drawings show certain embodiments of the invention, numerous changes and alterations may be made without departing from the spirit of the invention.

We, therefore, do not limit ourselves to details of construction and arrangement of parts, as shown, but want 'to include all changes, variations and modifications constituting departures within the scope of the invention as dei-ined in the appended claims.

We claim:

l. A rotary engine, including an air intake, a

ing a piston for compressing inducted air, an explosion chamber on said casing communicating with the casing chamber, means for normally dividing said explosion chamber in two compartments, one of said compartments being the compression chamber ior the inducted air, and both compartments when intercommunicating constituting the explosion chamber, means for supplying a fuel charge under atmospheric pressure to the other of said compartments, and means for 'V placing both compartments in inter-communication at time of explosion.

3. A rotary engine, including a casing, an air intake for said casing, a rotor in said casing having a piston for compressing inducted air, an eX- plosion chamber on said casing communicating with the casing chamber, means for normally dividing said explosion chamber in two compartments, one of said compartments being the compression chamber for the inducted air, and both compartments when inter-communicating constituting the explosion chamber, means for supis compressed by the piston and forced into the explosive chamber 5.

It is obvious that the stud 5l may also be ap" plied to the casing 29 to vary its content by adjustment of the stud.

- The modification shown in Figs. 5 and 6 explying a fuel charge under atmospheric pressure to the other of said compartments, means for placing both compartments in inter-communication at time of explosion, and means for varying the cubic content of said explosion chamber in order to maintain the expansion constant upon variation of the amount of fuel admitted.

RAYMOND H. GOLD. SIDNEY WASSERMAN. 

